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package org.apache.juneau.rest.response;

import java.io.*;
import java.util.zip.*;

import org.apache.juneau.rest.*;
import org.apache.juneau.rest.annotation.*;
import org.apache.juneau.utils.*;
import org.apache.juneau.utils.ZipFileList.*;

/**
 * Response handler for ZipFileList objects.
 * 
 * <p>
 * Can be associated with a REST resource using the {@link RestResource#responseHandlers} annotation.
 * 
 * <p>
 * Sets the following headers:
 * <ul class='spaced-list'>
 * 	<li>
 * 		<code>Content-Type</code> - <code>application/zip</code>
 * 	<li>
 * 		<code>Content-Disposition=attachment;filename=X</code> - Sets X to the file name passed in through the
 * 		constructor {@link ZipFileList#ZipFileList(String)}.
 * </ul>
 * 
 * <h5 class='section'>See Also:</h5>
 * <ul>
 * 	<li class='link'><a class="doclink" href="../../../../../overview-summary.html#juneau-rest-server.MethodReturnTypes">Overview &gt; juneau-rest-server &gt; Method Return Types</a>
 * </ul>
 */
public class ZipFileListResponseHandler implements ResponseHandler {

	@Override /* ResponseHandler */
	public boolean handle(RestRequest req, RestResponse res, Object output) throws IOException, RestException {
		if (output.getClass() == ZipFileList.class) {
			ZipFileList m = (ZipFileList)output;
			res.setContentType("application/zip");
			res.setHeader("Content-Disposition", "attachment;filename=" + m.fileName); //$NON-NLS-2$
			try (OutputStream os = res.getOutputStream()) {
				try (ZipOutputStream zos = new ZipOutputStream(os)) {
					for (ZipFileEntry e : m)
						e.write(zos);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
			return true;
		}
		return false;
	}
}
